html,
body {
  line-height: 1;
  font-family: 'PingFang SC', 'STHeitiSC-Light', 'Helvetica-Light', arial, sans-serif, 'Droid Sans Fallback';
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  height: 100%;
  background-color: #fff;
  overflow-x: hidden;
}

html {
  font-size: calc(100vw / 375 * 37.5); // 基准1rem = 37.5px => 100vh/375 = 1rem/37.5
}

a {
  text-decoration: none;
  color: #000;
}

img {
  vertical-align: top;
}

@media screen and (min-width: 750px) {
  html {
    font-size: 50px; // 最大宽度font-size: 50px
  }
}
